 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.ide.dialogs;

 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.preference.RadioGroupFieldEditor;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.internal.dialogs.PerspectivesPreferencePage;
 import org.eclipse.ui.internal.ide.IDEInternalPreferences;
 import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
 import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin;

 /**
  * Extends the Perspectives preference page with IDE-specific settings.
  *
  * Note: want IDE settings to appear in main Perspectives preference page (via
  * subclassing), however the superclass, PerspectivesPreferencePage, is
  * internal
  */
 public class IDEPerspectivesPreferencePage extends PerspectivesPreferencePage {
     private final String PROJECT_SWITCH_PERSP_MODE_TITLE = IDEWorkbenchMessages.ProjectSwitchPerspectiveMode_optionsTitle;

     private final String PSPM_ALWAYS_TEXT = IDEWorkbenchMessages.ProjectSwitchPerspectiveMode_always;

     private final String PSPM_NEVER_TEXT = IDEWorkbenchMessages.ProjectSwitchPerspectiveMode_never;

     private final String PSPM_PROMPT_TEXT = IDEWorkbenchMessages.ProjectSwitchPerspectiveMode_prompt;

     private RadioGroupFieldEditor projectSwitchField;

     /**
      * Creates the page's UI content.
      */
     protected Control createContents(Composite parent) {
         // @issue if the product subclasses this page, then it should provide
 // the help content
 PlatformUI
                 .getWorkbench()
                 .getHelpSystem()
                 .setHelp(
                         parent,
                         org.eclipse.ui.internal.IWorkbenchHelpContextIds.PERSPECTIVES_PREFERENCE_PAGE);

         Composite composite = createComposite(parent);

         createOpenPerspButtonGroup(composite);
         createOpenViewButtonGroup(composite);
         createProjectPerspectiveGroup(composite);
         createCustomizePerspective(composite);

         return composite;
     }

     /**
      * Creates a composite that contains buttons for selecting the preference
      * opening new project selections.
      */
     private void createProjectPerspectiveGroup(Composite composite) {

         Composite projectComposite = new Composite(composite, SWT.NONE);
         projectComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
         projectComposite.setFont(composite.getFont());

         String [][] namesAndValues = {
                 { PSPM_ALWAYS_TEXT, IDEInternalPreferences.PSPM_ALWAYS },
                 { PSPM_NEVER_TEXT, IDEInternalPreferences.PSPM_NEVER },
                 { PSPM_PROMPT_TEXT, IDEInternalPreferences.PSPM_PROMPT } };
         projectSwitchField = new RadioGroupFieldEditor(
                 IDEInternalPreferences.PROJECT_SWITCH_PERSP_MODE,
                 PROJECT_SWITCH_PERSP_MODE_TITLE, namesAndValues.length,
                 namesAndValues, projectComposite, true);
         projectSwitchField.setPreferenceStore(getIDEPreferenceStore());
         projectSwitchField.setPage(this);
         projectSwitchField.load();
     }

     /**
      * Returns the IDE preference store.
      */
     protected IPreferenceStore getIDEPreferenceStore() {
         return IDEWorkbenchPlugin.getDefault().getPreferenceStore();
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.ui.internal.dialogs.PerspectivesPreferencePage#performDefaults()
      */
     protected void performDefaults() {
         projectSwitchField.loadDefault();
         super.performDefaults();
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.ui.internal.dialogs.PerspectivesPreferencePage#performOk()
      */
     public boolean performOk() {
         projectSwitchField.store();
         IDEWorkbenchPlugin.getDefault().savePluginPreferences();
         return super.performOk();
     }

 }

